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Car Forum / Volvo Cars / June 2006

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740 Window Washer Tee

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Perk - 23 Jun 2006 06:01 GMT
I ordered a tee fitting for the Window Washer on my 1990 740. When it
arrived I tried to blow through it in all directions but found it
wouldn't pass any air at all.

I contacted the supplier and they sent me another one. This one is the
same. If I can't blow through it how could a small pump force water
through it?  Am I missing something or doing something wrong ?

Thanks,

Perk

Note --- My real email is perkatwavecabledotcom
Jamie - 23 Jun 2006 12:31 GMT
On mine (1987 740) when I took it off and blew through it, there was a
one way valve inside of it. You should be able to pass water from the
bottom up and out through the two sides only.

My red top was leaking water, so I used some Automotive GOOP to seal it
and it worked fine for me. I'm not sure why it needs this valve. Maybe
to keep the pump primed, or to provide even pressure to both sides.

Try it with water on the car to be sure.

> I ordered a tee fitting for the Window Washer on my 1990 740. When it
> arrived I tried to blow through it in all directions but found it
[quoted text clipped - 9 lines]
>
> Note --- My real email is perkatwavecabledotcom
Mike F - 23 Jun 2006 14:13 GMT
> I ordered a tee fitting for the Window Washer on my 1990 740. When it
> arrived I tried to blow through it in all directions but found it
[quoted text clipped - 9 lines]
>
> Note --- My real email is perkatwavecabledotcom

This is normal.  The pump puts out much higher pressure than your
lungs.  Install it and see.

Signature

Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)

Jamie - 23 Jun 2006 14:49 GMT
Oh, if you want to see something fun, if you ever have to re-wire the
pump -- switch the wires on the two prongs. Mine reversed direction and
was sucking instead of pumping.

Weird.

> > I ordered a tee fitting for the Window Washer on my 1990 740. When it
> > arrived I tried to blow through it in all directions but found it
[quoted text clipped - 19 lines]
> Replace tt with t (twice!) and remove parentheses to email me directly.
> (But I check the newsgroup more often than this email address.)
zencraps@comcast.net - 23 Jun 2006 16:45 GMT
> Mine reversed direction and
> was sucking instead of pumping.

Hmmmm, I wonder if that will work on my wife, too?

roll dem bones
Jamie - 23 Jun 2006 17:13 GMT
nah - worse. Reverse the wiring on women and they become men. LOL

> > Mine reversed direction and
> > was sucking instead of pumping.
> >
> Hmmmm, I wonder if that will work on my wife, too?
>
> roll dem bones
James Sweet - 24 Jun 2006 03:29 GMT
> Oh, if you want to see something fun, if you ever have to re-wire the
> pump -- switch the wires on the two prongs. Mine reversed direction and
> was sucking instead of pumping.
>
> Weird.

They're just a permanent magnet DC motor driving a pump consisting of
two meshed gears. If you reverse the current, the motor will run
backwards and it'll pump in the opposite direction.
Jamie - 24 Jun 2006 03:34 GMT
So you're saying I can make my Volvo suck?
LOL

<Kidding>

> > Oh, if you want to see something fun, if you ever have to re-wire the
> > pump -- switch the wires on the two prongs. Mine reversed direction and
[quoted text clipped - 5 lines]
> two meshed gears. If you reverse the current, the motor will run
> backwards and it'll pump in the opposite direction.
Admin - 28 Jun 2006 00:37 GMT
> So you're saying I can make my Volvo suck?
> LOL
>
> <Kidding>

That's why I named my XC70 Linda Lovelace.
Perk - 23 Jun 2006 17:15 GMT
>> I ordered a tee fitting for the Window Washer on my 1990 740. When it
>> arrived I tried to blow through it in all directions but found it
[quoted text clipped - 12 lines]
> This is normal.  The pump puts out much higher pressure than your
> lungs.  Install it and see.

You were right Mike, I put it on and, as I sat there amazed, the darn
water came right on through like magic.

Thanks all,

Perk  (:>)

Signature

Note --- My real email is perkatwavecabledotcom

James Sweet - 24 Jun 2006 03:28 GMT
> I ordered a tee fitting for the Window Washer on my 1990 740. When it
> arrived I tried to blow through it in all directions but found it
[quoted text clipped - 9 lines]
>
> Note --- My real email is perkatwavecabledotcom

Those pumps are capable of much more pressure than your lungs, try it,
it'll probably work fine.
Michael Pardee - 24 Jun 2006 04:23 GMT
> Those pumps are capable of much more pressure than your lungs, try it,
> it'll probably work fine.

When I worked in an avionics shop that included an instrument shop, I tested
my lung power to see how much pressure I could produce by blowing. As an
avid cyclist at the time I thought I could blow a storm. 2 PSI was the best
I could manage!

Mike
Admin - 28 Jun 2006 00:38 GMT
> When I worked in an avionics shop that included an instrument shop, I tested
> my lung power to see how much pressure I could produce by blowing. As an
> avid cyclist at the time I thought I could blow a storm. 2 PSI was the best
> I could manage!
>
> Mike

You wouldn't be very popular in West Hollywood.

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